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| author | Maximilian Luz <luzmaximilian@gmail.com> | 2021-06-04 16:47:52 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-06-16 18:47:53 +0300 |
| commit | 776c53c6a448905d8b9b161805b67f82301bfe91 (patch) | |
| tree | 6e20b63dfca5d775745e8beb31e7a9d89a3a5a81 /Documentation/userspace-api/ioctl | |
| parent | b2763358feb28590f6b52a4c95c94a645dadfb26 (diff) | |
| download | linux-776c53c6a448905d8b9b161805b67f82301bfe91.tar.xz | |
platform/surface: aggregator_cdev: Add support for forwarding events to user-space
Currently, debugging unknown events requires writing a custom driver.
This is somewhat difficult, slow to adapt, and not entirely
user-friendly for quickly trying to figure out things on devices of some
third-party user. We can do better. We already have a user-space
interface intended for debugging SAM EC requests, so let's add support
for receiving events to that.
This commit provides support for receiving events by reading from the
controller file. It additionally introduces two new IOCTLs to control
which event categories will be forwarded. Specifically, a user-space
client can specify which target categories it wants to receive events
from by registering the corresponding notifier(s) via the IOCTLs and
after that, read the received events by reading from the controller
device.
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210604134755.535590-5-luzmaximilian@gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'Documentation/userspace-api/ioctl')
| -rw-r--r-- | Documentation/userspace-api/ioctl/ioctl-number.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 9bfc2b510c64..1409e40e6345 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -325,7 +325,7 @@ Code Seq# Include File Comments 0xA3 90-9F linux/dtlk.h 0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem 0xA4 00-1F uapi/asm/sgx.h <mailto:linux-sgx@vger.kernel.org> -0xA5 01 linux/surface_aggregator/cdev.h Microsoft Surface Platform System Aggregator +0xA5 01-05 linux/surface_aggregator/cdev.h Microsoft Surface Platform System Aggregator <mailto:luzmaximilian@gmail.com> 0xA5 20-2F linux/surface_aggregator/dtx.h Microsoft Surface DTX driver <mailto:luzmaximilian@gmail.com> |